The 2024 GMC Canyon AT4X with the 2.7L turbo I4 (L3B) and 8-speed auto is too new for widespread pattern failures, but early adopters report turbo/timing issues inherited from the Silverado 1500 platform and transmission cooler problems common to GM's 8L45/8L90 family.
Timing Chain Stretch / Cam Phaser Failure
Occasional · high severity
Typical onset: 40,000-80,000 mi
Symptoms: cold-start rattle lasting 3-5 seconds, check engine light with P0016/P0017 cam correlation codes, rough idle when warm, loss of power under load
Fix: Timing chain, guides, tensioner, and both cam phasers. Engine front cover comes off. 12-16 labor hours depending on accessibility with AT4X skid plates and lift.
Estimated cost: $3,200-5,500
Transmission Oil Cooler Line Failure
Common · high severity
Symptoms: transmission fluid pooling under vehicle near radiator, burnt transmission smell, slipping shifts or delayed engagement, low trans fluid warning
Fix: Quick-connect fittings at cooler corrode or crack, especially on AT4X models seeing water crossings. Replace cooler lines and flush system. 3-4 hours labor. Critical to catch early before air enters valve body.
Estimated cost: $600-1,200
Turbocharger Wastegate Actuator Sticking
Occasional · medium severity
Typical onset: 50,000-90,000 mi
Symptoms: P0299 underboost code, limp mode activation under acceleration, lack of power above 3,000 RPM, turbo whistle changes pitch or disappears
Fix: Wastegate actuator on hot side seizes from carbon buildup. Some techs clean and free it up (2 hours), but replacement is more reliable (4-6 hours with turbo removal). AT4X exhaust routing adds complexity.
Estimated cost: $800-2,400
Valve Cover / PCV System Oil Leaks
Common · low severity
Typical onset: 30,000-70,000 mi
Symptoms: oil smell in cabin when heater runs, valve cover oil seepage visible near timing cover, slight oil consumption (1 qt per 3,000 mi), oil residue on intake manifold
Fix: PCV diaphragm in valve cover fails or gasket hardens. Valve cover is integrated PCV on this engine. Replace cover assembly and gasket. 2.5-3 hours.
Estimated cost: $450-850
Fuel Injector Failure (Cylinder #2 or #3)
Rare · medium severity
Typical onset: 60,000-100,000 mi
Symptoms: misfire code P0302 or P0303, rough idle that smooths above 2,000 RPM, fuel smell from exhaust, hard starting when hot
Fix: Direct-injection piezo injectors fail internally. Replace injector and run fuel system cleaning. 2 hours for one cylinder, but often replace all four preventively (5-6 hours).
Estimated cost: $600-2,800
Transmission Mount Collapse
Occasional · low severity
Typical onset: 40,000-80,000 mi
Symptoms: clunk when shifting from park to drive, vibration at idle in gear, visible powertrain movement when rocking vehicle, harsher shift feel
Fix: Rubber isolator in rear trans mount degrades faster on AT4X from off-road use. Replace mount. 1.5 hours including skid plate removal.
Estimated cost: $300-550
Owner tips
Change transmission fluid at 50k miles regardless of 'lifetime fill' claims—8L45 does not tolerate extended intervals, especially with towing or off-road use.
Use Top Tier fuel exclusively—the L3B's direct injection is sensitive to carbon buildup on intake valves; walnut blasting at 60k-80k miles is cheap insurance.
Inspect transmission cooler lines every oil change on AT4X models—road salt and trail debris accelerate corrosion at the quick-connects.
If you hear timing chain rattle on cold starts, address it immediately—waiting turns a $4k job into an $8k engine replacement when the chain breaks.
Too early to call reliability, but the L3B engine has known weaknesses from the Silverado—budget $1,500/year after warranty and avoid the first model year if buying used.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
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Control Modules — 2024 GMC Canyon AT4X
Every control module on the 2023-2026 GMC Canyon AT4X — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
📍 Engine compartment, driver side fender well, behind headlamp assembly
🔧 Autel MaxiSys or GM SPS2
⚠️ Controls LED headlamps, DRL, and automatic high beam; requires configuration for headlamp type
Differential Control Module (DCM)no coding▸ programming details
📍 Integrated with TCCM; no separate module
⚠️ Front and rear electronic locking differentials controlled by TCCM; no separate module
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 25V856000
2025-12-11
General Motors, LLC (GM) is recalling certain 2024–2026 GMC Canyon AT4X AEV vehicles. Incorrect sensing and diagnostic module (SDM) software may cause a second stage passenger air bag deployment when only a first stage is intended. As such, these vehicles fail to conform to Federal Motor Vehicle Safety Standard (FMVSS) number 208, “Occupant Crash Protection."
Consequence: An air bag that deploys improperly increases the risk of injury in a crash.
Remedy: Dealers will update the SDM software, free of charge. Owner notification letters were mailed January 30, 2026. Owners may contact GMC customer service at 1-800-462-8782. GM's number for this recall is N252533510. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on December 11, 2025.
EXTERIOR LIGHTING:HEADLIGHTS · 24V673000
2024-09-12
General Motors, LLC (GM) is recalling certain 2024 GMC Canyon vehicles. The headlights may flicker while driving and while the vehicle is in park. As such, these vehicles fail to comply with the requirements of Federal Motor Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."
Consequence: Headlights flickering can reduce visibility, increasing the risk of a crash.
Remedy: Dealers will replace a module in the headlight, free of charge. Owner notification letters were mailed October 10, 2024. Owners can contact GMC customer service at 1-800-462-8782. GM's number for this recall is N242468880.
General Motors, LLC (GM) is recalling certain 2024 Chevrolet Colorado and GMC Canyon vehicles. The lock ring that secures the fuel pump to the fuel tank assembly may not have been fully locked during assembly, which can result in a fuel leak during a crash.
Consequence: A fuel leak in the presence of an ignition source increases the risk of a fire.
Remedy: Dealers will inspect and fully lock the fuel tank lock ring as necessary, free of charge. Owner notification letters are expected to be mailed August 13, 2024. Owners may contact Chevrolet customer service at 1-800-222-1020, or GMC Customer Call Center at (888) 988-7267. GM's number for this recall is N242451330.
Vehicle Info — 2024 GMC Canyon AT4X
Performance
Horsepower
310hp
Torque
430lb-ft
0–60 mph
6.8sec
Quarter mile
15.2sec
Top speed
112mph
Fuel economy (EPA)
City
17mpg
Highway
17mpg
Combined
17mpg
Fuel
Regular Gasoline
Capability & size
Towing capacity
6,000lb
Payload
1,640lb
Curb weight
5,145lb
Seating
5seats
EPA class
Small Pickup Trucks 4WD
Wiper blades
AT4X trim uses same 24-inch blades as other third generation Canyon models. Pickup truck body style has no rear wiper.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2024 GMC Canyon AT4X 2.7L I4 Turbo and can vary by trim.
🔧 Built by master technician Chris Hackleman · Master Technician · 20+ years.